Mass transfer in packed columns: Co-current (downflow) operation: 1 in. And 1.5 in. Metal pall rings and ceramic intalox saddles: Multifilament gauze packings in 20 cm and 38 cm i.d. columns
✍ Scribed by V.V. Mahajani; M.M. Sharma
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 605 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0009-2509
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✦ Synopsis
The theory of gas absorption accompamed by fast pseudo-mth order reaction was used to obta,n values of effective mterfaclal area, a, m 20 and 38 cm I d packed columns which were operated co-currently (downflow) Values of a were obtamed for 1 m and 15 m metal Pall rmgs. 1 m stamless steel Pall rmgs, havmg length (height) to diameter ratlo of 1 0, 0 75, and 0 5. 1 m and 1 5 m ceranuc ItaIox saddles, and stamless steel muMlament wue gauze type packmg over a wrlde range of gas and hqurd superticutl veloclttes The gas superficial velocity was vaned from 30 to 255 cmlsec m the 20 cm I d column and 14 to 73 cmlsec m the 38 cm I d column The hquld superficial velocity was vaned from 0 2 to 3 cmlsec m the 20 cm L d column and 0 2 to 1 cmlsec m the 38 cm I d column Merent flow regunes. namely, tnckle flow (film flow), pulse flow and transItion from pulse to disperse flow, were covered The values of a were found to be m the range of 0 6 to 2 cmz/cm3 for the tickle Row (film flow) regme, and 2 4-5 cm2/cm3 for the pulse Aow remme In the case of multifilament wye gauze packmg (MFWGP) remarkably high values of a up to 16 cm'/cm' were obtamed m the pulse to drsperse Row regune